diff --git a/app/src/test/java/com/app/paperstow/data/backup/RoomDbFilesTest.kt b/app/src/test/java/com/app/paperstow/data/backup/RoomDbFilesTest.kt
index d71cb12..ac5b1a3 100644
--- a/app/src/test/java/com/app/paperstow/data/backup/RoomDbFilesTest.kt
+++ b/app/src/test/java/com/app/paperstow/data/backup/RoomDbFilesTest.kt
@@ -31,7 +31,8 @@ class RoomDbFilesTest {
     @Test
     fun `non sqlite header is rejected`() {
         val f = File.createTempFile("text", ".db")
-        f.writeText("this is not a sqlite database file!!")
+        // Must be >= 100 bytes so inspect() reaches the header check, not the size gate.
+        f.writeText("this is not a sqlite database file!!".repeat(4))
         try {
             val check = RoomDbFiles.inspect(f)
             assertFalse(check.validSqlite)